It can be anything! An apex, subdomain, or even a URL.

Results forapps.workspace.helloclass.ro

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2022-12-30T15:00:07.957	2022-12-30T14:00:07	2023-03-30T14:00:06	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3
2022-12-30T15:00:07.589	2022-12-30T14:00:07	2023-03-30T14:00:06	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3
2022-10-21T11:38:24.3	2022-10-21T10:38:23	2023-01-19T10:38:22	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3
2022-10-21T11:38:23.6	2022-10-21T10:38:23	2023-01-19T10:38:22	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3
2022-10-21T11:33:44.198	2022-10-21T10:33:43	2023-01-19T10:33:42	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3
2022-10-21T11:33:44.021	2022-10-21T10:33:43	2023-01-19T10:33:42	apps.workspace.helloclass.ro	apps.workspace.helloclass.ro	C=US, O=Let's Encrypt, CN=R3